生物学杂志

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桔梗水浸提液对3种作物种子萌发和幼苗生长的影响

  

  1. 1.安徽大学生命科学学院,合肥 230601;2.阜阳师范学院 抗衰老中草药安徽省工程技术研究中心,阜阳 236037
  • 出版日期:2015-12-18 发布日期:2015-12-18
  • 通讯作者: 李焰焰,博士,教授,主要从事植物生态学方面的研究, E-mail: linie@126.com
  • 作者简介:李尚擘,硕士研究生,主要从事药用植物资源学及生态学等方面的研究,E-mail: Lzh5512@126.com;
  • 基金资助:
    :国家科技支撑计划子课题(2009BADA6B06);安徽省教育厅自然科学项目(KJ2013B198);安徽大学研究生学术创新研究项目(yqh100142)

Effects of aqueous extracts from Platycodon Grandiflorum on seed germination and growth of three different kinds of crops

  • Online:2015-12-18 Published:2015-12-18

摘要: 桔梗在生产中连作会大幅减产,为探明其适宜的轮作作物,研究了桔梗地上部与根部不同浓度水浸液对小麦、萝卜和黄豆种子萌发及幼苗生长的影响。测定了种子萌发(发芽率、发芽势、发芽指数、相对活力指数)、幼苗生长(苗高、根长)与生物量(苗地上部与根部鲜重)等指标。结果表明,两类浸提液对3种作物种子均表现为低浓度促进、高浓度抑制的效应,且根部浸液的作用效果强于地上部浸液;3种幼苗均表现为根部比地上部对浸提液的反应更敏感;通过综合效应指标对比试验的3种作物,萝卜更适宜与桔梗轮作。

关键词: 桔梗, 小麦, 萝卜, 黄豆, 水浸提液

Abstract: In Platycodon grandiflorum production, continuous cropping results in a considerable reduction of crop yield. In order to find out the proper crop rotation of P. grandiflorum, aqueous extracts of different Concentrations of P. grandiflorum were prepared. The effect of those extracts on soybean’, wheat’ and radish’ seed germination and seedling growth were studied. The germination index (germination rate, germination potential, germination index, relative vigor index), growth index (seedling height, root length) and biomass (shoot and root fresh weight) were measured. The results showed that the effect of two kinds of extracts on the three kinds of seeds showed the inhibition of low concentration, the promotion of high concentration. Root extract effect is stronger than shoot extracts. The responses of three seedlings roots' on the two extracts were more sensitive than the shoots'. The comprehensive effect indexes of the three crops indicated that radish is more suitable to the P. grandiflorum rotation cropping.

Key words: Platycodon grandiflorum, Wheat, Radish, Soybean, aquatic extract